I would see the signal that Mach outputs as similar to what many systems have used in the past and more commonly used to keep a Watchdog timer reset, rather than a charge pump, but the effect is the same.
I would think putting it in any hard wired E-stop circuits, would not only prevent any operation until power up, but also if the PC were to crash or happen to go into the BSOD while running, also shut the operating systems down, and also maybe easier to implement?
This to me would give it a wider scope.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.